Rolf, This is kinda old news. They have been testing for some time with Hydrogen.
the RX-8 style engine is perfect since they
can set the ports for no overlap event. There is squawk that the side
ported "8" engine started life in their H2 testing. There
are papers which are a couple of years old. Use H2 powered
cars in google. You will probably get hits for the Mazda paper. Bill
Jepson

Thanks Bill, and I thought I hit on something new. I see now that it has been
around for a while. Here is the link:
http://www.evworld.com/databases/shownews.cfm?pageid=news150803-04

Also thanks to Vance for clearing up efficiency. I was wondering why H2 as a
fuel could suddenly change engine efficiency over the RPE. Storing H2, when
you need perhaps a 400 kg tank is something else as well as the cost of making
H2 since it is not a 'fuel' found in nature. It's only an energy carrier that must
first
be made. Looks like the H2-fueled ICE may not be very favourable either.
Rolf Pfeiffer.

Here is some more info on the work that Mazda did.

Paul Lamar
 
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